[PATCH 3/5] drm/i915/psr: Increase psr size limits for Xe2

[Kandpal, Suraj]

> -----Original Message-----
> From: Roper, Matthew D <matthew.d.roper at intel.com>
> Sent: Saturday, October 26, 2024 3:31 AM
> To: Kandpal, Suraj <suraj.kandpal at intel.com>
> Cc: intel-xe at lists.freedesktop.org; intel-gfx at lists.freedesktop.org; Nautiyal,
> Ankit K <ankit.k.nautiyal at intel.com>
> Subject: Re: [PATCH 3/5] drm/i915/psr: Increase psr size limits for Xe2
> 
> On Fri, Oct 25, 2024 at 11:31:34AM +0530, Suraj Kandpal wrote:
> > Increase the psr max_h limit to 4096.
> 
> Commit message doesn't match code (this should probably say max_v
> instead of max_h).

Sure will fix that

> 
> Since PSR2 size is supported up to the maximum pipe size now (for both
> Xe2 and Xe3) would it be simpler to just make the check on psr_max_{h,v}
> conditional to pre-Xe2?  Then if we don't have any truly PSR-specific limits, we
> don't need to keep duplicating the pipe limits in two places going forward.
> if we 

@Hogander, Jouni do you see any risk of this being done or should we go ahead with Matt said
And have the checks just for pre-Xe2

Regards,
Suraj Kandpal

> 
> Matt
> 
> >
> > Bspec: 69885, 68858
> > Signed-off-by: Suraj Kandpal <suraj.kandpal at intel.com>
> > ---
> >  drivers/gpu/drm/i915/display/intel_psr.c | 6 +++++-
> >  1 file changed, 5 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/gpu/drm/i915/display/intel_psr.c
> > b/drivers/gpu/drm/i915/display/intel_psr.c
> > index 4176163ec19a..c22386a31a63 100644
> > --- a/drivers/gpu/drm/i915/display/intel_psr.c
> > +++ b/drivers/gpu/drm/i915/display/intel_psr.c
> > @@ -1453,7 +1453,11 @@ static bool intel_psr2_config_valid(struct
> intel_dp *intel_dp,
> >  		return false;
> >  	}
> >
> > -	if (DISPLAY_VER(display) >= 12) {
> > +	if (DISPLAY_VER(display) >= 20) {
> > +		psr_max_h = 5120;
> > +		psr_max_v = 4096;
> > +		max_bpp = 30;
> > +	} else if (DISPLAY_VER(display) >= 12) {
> >  		psr_max_h = 5120;
> >  		psr_max_v = 3200;
> >  		max_bpp = 30;
> > --
> > 2.34.1
> >
> 
> --
> Matt Roper
> Graphics Software Engineer
> Linux GPU Platform Enablement
> Intel Corporation